var a = event.clientX - aImg[i].offsetLeft - aImg[i].offsetWidth / 2;
var b = event.clientY - aImg[i].offsetTop - oMenu.offsetTop - aImg[i].offsetHeight / 2;
var iScale = 1 - Math.sqrt(a * a + b * b) / 300;
if (iScale < 0.5) iScale = 0.5;
aImg[i].width = aWidth[i] * iScale